Automatic telegraphy.



P. B. DELANY.

AUTOMATIC TELEGRAPHY.

APPLICATION FILED APR. 21, 1911.

1 ,1&1,868, Patented. June 1, 1915.

Original application filed December 29, 1903, Serial No. 469,804. Divided and this 27, 1911. Serial N0. 623,693.

i which makes contacting unreliable.

perforations in the tape.

YPATRICK B. DELANY, OF SOUTH ORANGE, NEW JERSEY, AND NANTUGKET, MASSACHU- TELEPOST' COMPANY, OF NEW YORK, N. Y., A CORPORATION SETTS, ASSIGN'OR T cQF MAINE.

T all whom it may concern Be it known that I, PATRICK B. DELANY, a citizen of the United States, residing at South Orange, county of Essex, State of New Jersey, and at Nantucket, county of Nantucket, State of Massachusetts, have invented a certain new and useful Improvement in Automatic Telegraphy, of which the following is a. specification.

"This invention relates to automat c ref ceivers and provides a means by wh ch is insured proper contacts of the transmitting devices operating through perforations 1n the ordinary transmitting tape. It has been found that revolving drums over which the tape passes accumulate dirt on their surfgce's tationary contacts of opposing brushes are effective but somewhat troublesome to adjust. have found that a stationary contact presenting a sharp edge to an elastic contact finger pressing against it gives never falling connection. Dirt cannot accumulate on the edge to any appreciable degree and should it do so the pressure of the elastic contact 1s more than suflicient to cut through it. Any of the forms shown will afford perfectcontact at any speed. Below the tape there is located a non-elastic part having an edge against which the upper elastic transmitting contact finger comes into contact through The preferred form of the device is that of a toothed wheel against the edges or ends of the teeth of which the transmitting contact finger comes into contact when aperforation passes be tween the two. This wheel although normally stationary is capable of rotation so that from time to time a new tooth thereof may be brought into position to be engaged by the contact finger. When both of the transmitting contact fingers are on top of the tape, as in the well known Delany system, their relative adjustment is sometimes troublesome. By using a toothed circuit wheel to cooperate with each finger the adjustment and behavior of the apparatus is much simplified.

in the accompanying drawing: Figure 1 detail diagrammatic view showing two nsinittinp circuit wheels having teeth co doing" with yielding contact fingers bear upon the upper surface of the tape Specification of Letters Patent.

AUTOMATIC TELEGRAPHY.

lPate-ntcd June 1, 31.915.

application filed April which passes over the wheels. Fig. 2, a similar viewshowing a modification; and Fig. 3 shows transmitting contact blades against the edges of which bear the upper contact fingers when perforations-in a tape pass between them.

The contact wheels M in Figl are of course insulated from each other and are fixed to turn together about a. common axis. They have ordinary ratchet teeth m with which cooperate the line transmitting fingers f. L indicates the line. The paper tape passes between the teeth of the wheels and the transmitting fingers f. The wheels are adapted to be rotated step by step to bring, from time to time, into operative re-- lation to the transmitting fingers diiferent teeth of the wheels. The traverse of the tape serves to keep clean and well burnished the contact faces or edges both of the wheel teeth and the transmitting fingers.

In Fig. 2, the wheels are marked M. They are not like ordinary ratchet wheels but have thin radial blade-like teeth marked m- In Fig. 3, instead of the toothed circuit wheels there are two fixed relatively rigid blades 9, gwith the edges of which the flexible transmitting fingers f contact through the perforations of the tape. The fingers f are preferably each composed of a plurality of wires.

This application a division of my application, No. 469,80et, filed December 29, 1908.

1 claim:

1. in an automatic telegraph transmit-to a circular contact member having a plural ity of contact edges against which bears, through perfor tions of a transmitting tape, a fixed signal t .nsmitting contact.

In an automatic telegraph transmitter a contact wheel having a plurality of contact edges and a cooperating fixed transmitting contact finger. said wheel being adapted to be set to hold in position any one of the edges to be acted upon by the contact finger, combined with means for making and breaking contact of the active edge and finger.

3. In an automatic telegraph transmitter,

a rotatable contact wheel having a plurality I edges, an electric circuit including the wheel and transmitting contact and means for actuating the contact to break the circuit.

4. In an automatic telegraph transmitter, a normally fixed contact wheel adapted to be rotated and having a plurality of contact edges combined with a fixed cooperating transmitter contact'and means for actuating the contact to break the electric circuit in 5. In an automatic telegraph transmitter,

a fixed flexible contact maker combined with a series of interchangeable contact makers each having an edge against which the flexible contact maker is adapted to press 15 through perforations in a transmitting tape. In testimony whereof, I have hereunto subscribed my name.

PATRICK B. DELANY. Witnesses:

J. W. LARIsH, GHAs. E. PERKINS.

(topics or this patent may be obtained for five cents each, by addressing the commissioner of Patents.

Washington, D. O. 

